He Outsmarted The Avengers
Baron Zemo as the Coolest MCU Villain
Regardless of the fact that he did end up getting locked up for his crimes, there is no doubt that Baron Zemo will always be the first villain that ever actually accomplished the goals he set out to do. He pitted The Avengers against one another, revealed the truth to Tony Stark, and even killed the five super soldiers HYDRA created.
One of these feats on its own is a noteworthy accomplishment, but managing to do all three is insane. Just think of all of the planning and research that went into this scheme.
Zemo had to plant a wedge between the noblest group in the world while also getting the necessary info to lure Iron Man, Captain America, and Winter Soldier to the Siberian facility. Even then, it still took some major cojones to go through with the plan once he was face to face with them (albeit behind a protective barrier).
